The Fact That Most Infants,regardless of Their Culture,begin to Coo

Multiple Choice

The fact that most infants,regardless of their culture,begin to coo and babble at similar ages adds further evidence that

A) biological factors dictate the onset of these behaviors.
B) environmental factors dictate the onset of these behaviors.
C) cooing and babbling are predominantly the effects of nurture.
D) biology is not very well related to the infant's first vocalizations.